<?php
interface SGObjetoConexao {

	public function execute($sql);

	public function queryOne($sql);

	public function nextid($nomeTabela);

	public function isValid();
	
	public function fetchRow($resource);
	
	public function numRows($resource);
	
	public function free($resource);
	
	public function beginTransaction();
	
	public function commit();
	
	public function rollback();

}
?>